Getting error as variable is undefined

[vveeran]

I want to see the values of f(n) by using the find command.

But i am getting the error as variable is undefined.

Please help me.

Thanks in advance

[Fred_Kohlhepp]

Not sure why the solve block won't work. (Doesn't like v_k as a range variable but it wouldn't work for a single value either.)

But you can use the symbolic engine to get n as a function of E_k and v_k, see attached.

By the way, what's g_k for,decoration?

[AlanStevens · Accepted solution]

You need to make sure you have an initial guess for n, and make the solve block a function of vk - see attached.

However, as Fred points out, it is easy to solve explicitly for n here.

Alan